Python Source Code: Raspberry Pi Simple-minded Streaming Radio

StreamingPlayer.py

from evdev import InputDevice,ecodes,KeyEvent
import subprocess32

Media = {'KEY_KP7' : ['mplayer','http://relay.publicdomainproject.org:80/classical.aac'],
         'KEY_KP8' : ['mplayer','http://relay.publicdomainproject.org:80/jazz_swing.aac'],
         'KEY_KP9' : ['mplayer','http://live.str3am.com:2070/wmht1'],
         'KEY_KP6' : ['mplayer','http://pubint.ic.llnwd.net/stream/pubint_wamc'],
         'KEY_KP1' : ['mplayer','-playlist','http://dir.xiph.org/listen/5423257/listen.m3u'],
         'KEY_KP2' : ['mplayer','-playlist','http://dir.xiph.org/listen/5197460/listen.m3u'],
         'KEY_KP3' : ['mplayer','-playlist','http://dir.xiph.org/listen/5372471/listen.m3u'],
         'KEY_KP0' : ['mplayer','-playlist','http://dir.xiph.org/listen/5420157/listen.m3u']
 }

Controls = {'KEY_KPSLASH' : '/',
            'KEY_KPASTERISK' : '*',
            'KEY_KPDOT' : ' '
}

k=InputDevice('/dev/input/keypad')

print 'Starting mplayer'
p = subprocess32.Popen(Media['KEY_KP7'],stdin=subprocess32.PIPE)
print ' ... running'

for e in k.read_loop():
 if (e.type == ecodes.EV_KEY) and (KeyEvent(e).keystate == 1):
   
  kc = KeyEvent(e).keycode

  if kc == 'KEY_NUMLOCK':
    continue

  print "Got: ",kc

  if kc == 'KEY_BACKSPACE':
    print 'Backspace = shutdown!'
    p = subprocess32.call(['sudo','halt'])
    break

  if kc in Controls:
    print 'Control:', kc
    p.stdin.write(Controls[kc])

  if kc in Media:
    print 'Switching stream to ',Media[kc]
    print ' ... halting'
    p.communicate(input='q')
    print ' ... restarting'
    p = subprocess32.Popen(Media[kc],stdin=subprocess32.PIPE)
    print ' ... running'

print "Out of loop!"

More details on my blog at http://wp.me/poZKh-5DW